Hey if sm one gave 10 april exam it has one wrong question of physics which cbse had agreed bt besides that one question of chemistry has wrong option stated as correct in their off answerkey. the ques asks the group and period no of Te(52) with its valence shell config in 5s 5p. So answer must be 16 gp and 5th period bt they had given 6th period as correct ans. This is clearly wrong and must be brought into concern of cbse . Plz sombody raise a challange . I cant due to sm serious reasons. Bt if thers anyone of same exam plz challange answerkey .last date is 22 april 5 pm.